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nanoTX
TM
Telemetry Transmitter
15
Quasonix, Inc.
Standard Bit Rate
With Low Rate Option
-LR
With High Rate Option
-HR
Legacy Modulation
(BPSK)
0.05 - 10 Mbps
N/A
N/A
Legacy (QPSK, OQPSK)
0.05 - 20 Mbps
N/A
N/A
1.2.19 Internal Clock and Data Option
– ID
The ID option allows the CS and DS user settings to be reloaded on power up or on a manual recall of a setup.
Without the ID option, CS and DS are both forced to 0. Refer to the CF option for information about the Clock Free
option.
1.2.20 Limited Current Option - LC
This option is used to specify low current in the RF Off state. Current draw is less than 10 mA when the transmitter
is Off. This is a hardware pin option.
1.2.21 Forward Error Correction / Low Density Parity Check (LDPC) Option
– LD
This option provides the Low Density Parity Check (LDPC) encoding, which is being considered for use on the
iNET program. LDPC has been adopted by the Range Commander’s Council, IRIG 106-17, Appendix 2-D.
1.2.22 Forward Error Correction / Low Density Parity Check (LDPC) Option
– LD6
This option adds the extended LDPC option to the unit. It lets the user select from the six implemented LDPC codes,
and allows the randomizer command to select the CCSDS randomizer, if LDPC is enabled. Adding this option
automatically enables the existing LD option.
The IRIG standard calls out six variants of LDPC codes—all combinations of two different information block sizes
(k=4096 bits and k=1024 bits) and three different code rates (r=1/2, r=2/3, and r=4/5).
k=4096, r=1/2
k=1024, r=1/2
k=4096, r=2/3
k=1024, r=2/3
k=4096, r=4/5
k=1024, r=4/5
1.2.23 Low Bit Rate Option
– LR
The standard nanoTX™ supports bit rates from 0.1 to 28 Mbps in SOQPSK-TG and MULTI-h CPM modes, 0.05 to
14 Mbps in PCM/FM (Tier 0) mode and in all modes included with the PSK option. The LR option decreases the bit
rate to a minimum of 50 kbps (25 kbps for PCM/FM). (The minimum bit rate with a Clock Free transmitter is 50
kbps for all modes.) Refer to the CF option for information about the Clock Free option. Refer to Table 12 for bit
rate comparisons by mode.
1.2.24 Modulation Scaling Option
– MS
This option enables the MS and MJ commands which allow a user to set the modulation scaling factor and scale the
modulation index of the transmitted signal. For additional information, refer to Table 19, or contact Quasonix.